Nut-lock.



I H.T.HUGHES.

NUT LOCK.

APPLICATION FILED NOV. 10, 1913.

1, 1 14,696 Patented Oct. 20, 19,14.

sr'rns PATENT OFFICE.

HUGH T. HUG-HES, 0F YOUNGSTOWN, CHIC, ASSIGNOR OF ONE-HALF TO JOSEPHPGREMBSKI, AND ONE-THIRD TO SHELLEY M. STRAIN, BOTH OF YOUNGSTOWN,

OHIO.

NUT-LOCK.

iaiaeoe.

Specification of Letters Patent.

Application filed November 10, 1913.

Patented Oct. 20, 1914.

Serial No. 800,148.

To all whom it may concern:

Be it known that I, HUGH T. HUGHES, a citizen of the United States,residing at Youngstown, in the county of Mahoning, State of Ohio, haveinvented certain new and useful Improvements in Nut Locks; and I dohereby declare the following to be a full, clear, and exact descriptionof the invention, such as will enable others skilled in the art to whichit appertains to make and use the same.

This invention relates to nut looks.

The object of the invention resides in the provision of an improvedstructure for pre: venting nuts from becoming disengaged from bolts as aresult of jars or vibrations and is particularly adapted for use inconnection with rail joints.

With the above and other objects in view the invention consists in thedetails of construction and in the arrangement and combination of partsto be hereinafter more fully described and particularly pointed out inthe appended claim.

In describing the invention in detail reference will be had to theaccompanying drawings wherein like characters of reference denotecorresponding parts in the several views, and in which- Figure 1 is avertical section through a rail joint having the improved nut lockassociated therewith; Fig. 2, a longitudinal sec-' tion through thebolt, nut and locking washer and also disclosing the fish plates and webof the rail joints; Fig. 3, a section on theline 33 of Fig. 1, and Fig.i, a perspective View of the lock washer.

Referring to the drawings 10 indicates the rail and 11 the fish platesall of which is embodied in a rail joint in the usual and well knownmanner. Engaged through the fish plates 11 and web of the rail 10 is abolt 12 having the usual threaded portion 13. Engaged on the threadedportion 13 is a nut l-i the inner end of whose bore is smooth and flaredoutwardly as at 15. Interposed between the nut let and the adjacent fishplate 11 is a lock washer 16. This washer 16 is slit as at 17 and theresulting terminals of the washer are directed lat erally in oppositedirections as at 18 and 19. Formed integral with the washer 16 atdiametrically opposite points in the inner edge thereof are laterallyextending tongues 20 and 21. These tongues 20 and 21 are inclinedoutwardly with respect to the direction of rotation of the nut 14 whensame is screwed upon the bolt 12 so that the outermost edge of thetongue will engage the wall of the tapered portion 15 and sharply biteinto said wall.

In the use of the improved lock the bolt 12 is inserted through the fishplates and rail and the washer 16 then applied in en circling relationto the bolt. The nut 14' is then screwed upon the threaded portion 13 ofthe bolt. During the screwing of the nut 14: on the bolt the taperedportion 15 will cooperate with the tongues 20 and 21 and force same intocontact with the thread 13. When the nut 14 isscrewed home as far aspossible the laterally directed portion 18 will bite into the inner endof the nut and the laterally directed portion 19 into the adjacent fishplate 11 thus holding the washer 16 against rotation in a direction thatwould eflect the unscrewing of the nut 14L. It will also be obvious thatwhen the nut 14 is screwed home the binding action between the tongues,tapered wall 15, and threaded bolt portion 13 together with the bitingof the outer edges of said tongues into the tapered wall 15 will serveto hold the nut 14: against unscrewing rotation in an eiflcient manner.

What is claimed is In a nut look, a bolt having a threaded portion, anut engaged on said threaded portion and having the inner end of itsbore flared and smooth, a washer encircling the bolt inwardly of thenut, said washer being split and having its resulting terminals bentlaterally in opposite directions, and lateral tongues on the washerinclined outwardly with respect to the direction of rotation of the nutwhereby the outermost edges of said tongues will engagethe flared wallof the bore of the nut when the latter is screwed home, and said tonguesalso being forced into engagement with the shank of the bolt by theflared wall of the bore of the nut when the latter is applied.

In testimony whereof, I afiix my signature, in the presence of twowitnesses.

V. F. MALEGKI, JOHN HULKIEWIOK.

Copies of this patent may be obtained. for five cents each, byaddressing the Commissioner of Patents,

Washington, D. G.

